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Chapter 20: (Seeley's Anatomy & Physiology) Quiz

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I. Pre-natal development
A. Pre-natal period

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Terms in this set (151)

I. Pre-natal development
A. Pre-natal period

1. its the period from conception to birth

2. pre-natal period is divided into how many parts and what are they

3
a. germinal
b. embryonic
c. fetal

first 2 weeks of development

2nd- 8th week of development

the last seven months of pregnancy

B. What is used to calculate the clinical age of the unborn child by the medical community

the last menstrual period (LMP)

C. what do embryologists use to decide age

they use the developmental age which begins at fertilization

1. it is assumed that fertilization occurs when

about 14 days after the LMP

2. what is the difference between the development age and the clinical age

the development age is 14 days less than the clinical age

D. Fertilization
1. how does sperm enter

sperm travels through the vagina to the cervix to the body of the uterus and then to the uterine (fallopian) tubes

2. where does fertilization occur

in the uterine and fallopian tubes

3. what happens to sperm cells while passing through the uterus and uterine tubes

sperm cells undergo capacitation

a. what is capacitation

this makes sperm cells capable of releasing enzymes

b. what does the enzyme do

digests a pathway through the oocyte's membrane

c. generally, how many sperm enter